Got a set of these from a show £99.00 from them.easy to fit 2 screws 83 110 so the conectors dont fit just cut them off ! (they fit later models) not polarity conscious.(found this out by ringing them and the helpfull lady there conected a unit both ways and said "nope".They are waterproof and bright MUCH brighter and quicker to light(checked against front wing repeaters) So easy to fit ,waterproof,bright lets see howlong they last !